Fix desynchronized allowFlying state

src/launch/java/baritone/launch/mixins/MixinEntityPlayerSP.java

@@ -21,10 +21,13 @@ import baritone.Baritone;
 import baritone.api.event.events.ChatEvent;
 import baritone.api.event.events.PlayerUpdateEvent;
 import baritone.api.event.events.type.EventState;
+import baritone.behavior.PathingBehavior;
 import net.minecraft.client.entity.EntityPlayerSP;
+import net.minecraft.entity.player.PlayerCapabilities;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.Redirect;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 /**
@@ -72,4 +75,16 @@ public class MixinEntityPlayerSP {
     private void onPostUpdate(CallbackInfo ci) {
         Baritone.INSTANCE.getGameEventHandler().onPlayerUpdate(new PlayerUpdateEvent((EntityPlayerSP) (Object) this, EventState.POST));
     }
+
+    @Redirect(
+            method = "onLivingUpdate",
+            at = @At(
+                    value = "FIELD",
+                    target = "net/minecraft/entity/player/PlayerCapabilities.allowFlying:Z"
+            )
+    )
+    private boolean isAllowFlying(PlayerCapabilities capabilities) {
+        PathingBehavior pathingBehavior = Baritone.INSTANCE.getPathingBehavior();
+        return (!pathingBehavior.isEnabled() || !pathingBehavior.isPathing()) && capabilities.allowFlying;
+    }
 }

src/main/java/baritone/behavior/PathingBehavior.java

@@ -83,7 +83,6 @@ public final class PathingBehavior extends Behavior implements IPathingBehavior,
             cancel();
             return;
         }
-        mc.playerController.setPlayerCapabilities(mc.player);
         tickPath();
         dispatchEvents();
     }

src/main/java/baritone/pathing/movement/Movement.java

@@ -114,7 +114,7 @@ public abstract class Movement implements IMovement, Helper, MovementHelper {
      */
     @Override
     public MovementStatus update() {
-        player().capabilities.allowFlying = false;
+        player().capabilities.isFlying = false;
         MovementState latestState = updateState(currentState);
         if (BlockStateInterface.isLiquid(playerFeet())) {
             latestState.setInput(Input.JUMP, true);